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Finding the Fourth Proportional to 13,915.56, 20,871.54 and 3,526.68

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Solution

The fourth proportional to 13,915.56, 20,871.54 and 3,526.68 is: 5,289.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.56 : 20,871.54 = 3,526.68 : x
  2. Step 2: Convert to fraction form
    13,915.56/20,871.54 = 3,526.68/x
  3. Step 3: Cross multiply
    13,915.56x = 20,871.54 × 3,526.68
  4. Step 4: Simplify right side
    13,915.56x = 73,607,242.69
  5. Step 5: Solve for x
    x = 73,607,242.69/13,915.56
  6. Step 6: Final answer
    x = 5,289.56

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